Hokacb b



v (No Model.)

'H. B. MURDOOK.

INJEGTOR.

No. 259,649. Patented June13, 1882.

NITED STATES ATENT Fries.

HORACE B. MURDOCK, OF DETROIT, MICHIGAN, ASSIGNOR TO JAMES JENKS, OFSAME PLACE.

INJECTOR.

SPECIFICATION forming part of Letters Patent No. 259,649, dated June 13,1882,

Application filed October 12, 1881.

To all whom it may concern:

Be it known that I, HORACE B. MURDocK, of the city of Detroit, in thecounty of Wayne and State of Michigan, have invented an Improvement inInjectors of which the following is a specification.

The nature of this invention relates to certain new and usefulimprovements in injectors, by means of which the hollow plugs which formthe steam-jet andcombining tubes insaid injectors can be easily seatedor withdrawn when necessary for cleaning or repairs, and without the useof a special tool, through the steam or water connections.

The invention consists in the peculiar and novel construction ofsnchtubes or plugs and their combination with an injector, as more fullyhereinafter set forth.

Figure 1 is a vertical central section of an injector such as waspatented to James J enks, October 19, 1880, the patent being No.233,418. Fig. 2 shows details enlarged and in perspective.

In the accompanying drawings, which form apart of this specification, Arepresents the steam-inlet connections of an injector.

B is the steam-plug, forming a communication through which the steampasses to the combining-tube O. The plug B is cast with a recess, N, asshown in Fig. 2, such recess being divided by the partitions a, casttherein.

The combining-tube G is cast with a seat, b,

(No model.)

below which the tube is threaded, as shown, and the upper face of theseat-ring b is cast either with a recess similarly divided, as de- 3scribed in connection with the plug B, or has flanges c, at equaldistances apart, as shown in the enlarged figure, the latter being thereverse of the former.

The part of the injector into which the plug B is inserted is madesufficiently large to allow the plugG to be first carried through suchopening and screwed to its seat, after whici the plug B is inserted andscrewed to place. A tool, D, being simply a piece of gas-pipe of 4suitable size, with notches d cut at equal distances apart in its lowerend, engages with the partitions a or with the flanges c, and, passingthrough the connection A, enables the operator to easily remove andreplace the plugs when necessary without difficulty.

What I claim as my invention is 1. In an injector, the screw-plug B,provided with a central nozzle, and cast with a recess, N, havingdividing-partitions a, substantially as shown and for the purposespecified.

2. In an injector, the plug 0, provided with a central nozzle, andcastwith a seating-flange, b, and projections 0 thereon, substantiallyas shown and for the purpose specified.

HORACE B. MURDOGK.

Witnesses:

H. S. SPRAGUE, E. ScULLY.

